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{No Model.) 2 Sheets-Sheet 1.

E. BOENING. ELECTRIC STOP MEGHANISM.

No. 458,278. Patented Au 25,1891.

WITNESSES: INVENTOB Who- M m/ BY 5 M A ATTORNEY 5115 1:0,, wow-mum, msmusrau, n c

2 Sheets-Sheet 2.

E. BOENING. ELECTRIC STOP MECHANISM.

No. 458,278. Patented Aug. 25, 1891,

INVENTOR "UNITED STATES PATENT 'OFFICE.

ERNEST BOENING, OF YONKERS, NEXV YORK, ASSIGNOR OF ONE-HALF TO AUGUST SUNDH, OF SAME PLACE.

ELECTRIC STOP MECHANISM.

SPECIFICATION forming part of Letters Patent No. 458,278, dated August 25, 1891.

Application filed July 24, 1890. $erial No. 359,817. (No model.)

To all whom it may concern: tle-valve is shown as having a gear-wheel a Be it known that I, ERNEST BOENING, of aflixed to its stem. WVith this gear-wheel en- Yonkers, in the county of lVestchester and gages a rack-bar a which, as here shown, State of New York, have invented a certain forms a piston-rod for a piston a that works 55 new and useful Improvementin Stop Mechanwithin a cylinder a, extending transversely ism, of which the following is a specification. to the cylinder of the engine. The lower part The object of this improvementis to proof the cylinder (L13 is provided witha drip-cup vide a stop mechanism whereby a steam-eno to provide for taking off water of condengine or a driving-shaft may have its motion sation, and has connected with ita pipe 0, 6 10 arrested at any desired time, either automatiwhereby steam may be conducted to it from cally or from a distant place. the pipe a The passage of steam through I will describe apparatus embodying my the pipe (L is controlled by a valve a. I improvement, and then point out the novel have shown the valve a as having an arm a features in the claims. affixed to its stem. This arm is longitudi- 6 15 In-the accompanying drawings, Figure l is nally slotted and has connected with the slota side view of a steam-engine and a sectional ted portion one arm of a lever (L18, which is fulelevation of an apparatus connected therecrumed between the ends to a pin a, which, with and embodying myimprovement. Fig. as here shown, is supported byabracket fast- 2 is a plan or top view of the parts illustrated ened to one of the cylinder-heads. The other 0 in Fig. 1. Fig. 3 is a top view of one of said arm of the lever (L18 has an electro-mag'net parts and a horizontal section of the shank a mounted upon it. This electro-magnet is of the same. Fig. l is a side elevation of a shown as of the solenoid form and has a tubusteam-engine with another combination of lar core within which moves a bar a of soft parts connected therewith and embodying iron. A spring (L22 serves to elevate the soft- 75 my improvement. Fig. 5 is a transverse seciron bar. \Vhen the magnet is energized, the tion of a driving-shaft, a side View of a beltbar willbedrawn downward. Tothe lowerend pulley thereon, and a side view of a beltof the bar is attachedarod (L23, which extends shifter and other parts operating in connecthrough the lever a and at the lower end is tion therewith embodying my improvement. provided with an arc-shaped piece (L The 80 0 Fig. 6 is a plan of the parts illustrated in Fig. shape of this piece may be best understood by 5. Fig.7 shows a steam-pipe and a sectional reference to Fig. 3. The ends of the coils of elevation embodying my improvement, a the electro-magnet are connected to two linethrottlewvalve controlling the passage of steam wires (L25 a. As here shown, one of the conthrough the same, and certain parts for opernections includes an electric battery a. One 8 3 5 ating said valve. Fig.8 is a section taken at of the linewires is electrically connected to the plane of the dotted line a; :0, Fig. 7. the works of aclock (0 and the other to a con-, i

Similar lettersof reference designate corretact-piece a which is insulated from the sponding parts in all the figures. works of the clock, but extends into such po- Referring first to Figs. 1 and 2, A desigsition over the dial that the hour-hand of the 0 4o nates a steam-engine, which maybe of ordiclock will contact with it. Whenever this nary or any desirable form. It is shown as happens, the circuit, including the electrohaving a bed a, a cylinder-a, which is to conmagnet, will be completed, the latter will be tain a piston connected to a piston-rod or moenergized, and the piece a will be lowered. tive part 0. a cross-head a for guiding the After the lowering of the piece (0 the cross- 5 5 piston-rod, a crank-shaft a, a link a 0011- head @0 on its next reciprocation toward the necting the crank-shaft with the piston-rod, cylinder (6' will cause a cam-plate a which and a fly-wheel a on the said shaft. The is carried by it to contact with the piece a cylinder has a valve-chest a of any desired and oscillate the lever a. Theensuing oscilconstruction, and this receives steam from a lation of the lever will cause the valve a to :00 pipe a under control of a throttle-valve a be opened. Steamwill therenponbe admitted with which said pipe is provided. The throtto the cylinder G13 below the piston that works therein. Hence the piston will be caused to rise, and its rod a will rotate the valve a, and thereby cut off the supply of steam to the valve-chest of the steam-cylinder. In this way the steam-engine will be stopped. If the contact piece (L29 be made adjustable, the clock may be used to stop the steam-engine at any hour. Any kind of a circuit-closer may be employed in connection with the linewires e c0 so as to provide for closing the electric circuit including the electro-magnet by manual action. I have shown a push-button 0. for this purpose. Obviously this pushbutton may be located in a distant part of the building. Obviously a steam-whistle c0 may be placed upon the pipe C(,15,SO as to sound an alarm whenever the engine is to be stopped.

In the combination of parts represented by Fig. 4, a is the engine-cylinder, a the pistonrod, and a the cross-head of a steam-engine.

a is a rod sliding in brackets fastened to the cylinder and made to constitute a rack which will impart motion through a gearwheel a afiixed to the stem of the valve which controls the passage of steam through a pipe a to the valve-chest of the engine. On the cross-head a is a tappet a and on the sliding rod a is a transversely-adjustable rod (0 This rod e maybe lowered into the path of the tappet d and whenever this happens the said tappet will impart such movement to the rod a as to cause the latter to rotate the valve a and cut off the supply of steam to the valve-chest of the engine. The

3 5 rod e is connected to a lever at, which is fulcrumed by a pin a to a standard mounted upon the rod a. On this rod is also mounted an electro-magnet (L20. An armature for this electro-magnet is affixed to the lever (L35. The

0 coils of the electro-magnet are connected with line-wires (L25 (0 and the latter may be con nected by a clock or bya hand-piece. Obviously whenever the electro-magnet (0 is energized it will lower the rod a into the path 5 of the tappet (0 In Fig.5, B designates a driving-shaft or motive part, supported in suitable bearings and having affixed to it a belt-pulley b, which transmits motion to any other part by means of a belt 12' passing around it. The shaft B also has an idler or loose pulley 11 mounted upon it. A belt-shifter consisting of a longitudi nally-movable rod 12 and arms b embracing the belt I), serves to shift the belt from one pulley to the other. An electro-magnet e is connected with an electric circuit in the manner heretofore described, and the electric circuit may be closed, as already explained. It is mounted on a sliding bar a, and when it is energized it attracts an armature carried by a lever (0 which is fulcrumed by a pin to a standard a carried by the rod a The free end of the lever a has a pin a pivotally connected to it. This pin works toward and from the shaft B through a guide with which the rod. a is provided. IV hen the source of power.

magnetattracts its armature, this pin a is moved into the path of a tappet (L with which the shaft B is provided. The shaft 19 has a slight oscillating movement, and has affixed to it an arm 12 which at one side is provided with a lug I), that rests upon an arm on the sliding rod a, except when the latter is moved by the tappet e \Vhen deprived of its support by the movement of the rod a, the arm 11 will descend, and a pin with which its under side is provided will thereupon engage with a groove in a spiral cam 12 On the engagement of the arm with the cam the rod 5 will be moved longitudinally, so as to shift the belt onto the idler-pulley. The cam is provided at the end nearest the belt-pulley b with a continuous circumferential groove, so that it may go on rotating without applying more force to the arm b after the shifting of the latter and the rod 19 In Figs. 7 and 8 I have shown a wheel or pulley O, mounted loosely upon a shaft cand deriving motion through a belt 0 from any The shaft 0 is journaled in a bracket 0 and ordinarily has no motion. It has mounted upon it a gear-wheel, which engages with a rack engaging a gear-wheel a aflixed to the stem of a valve a, whereby the passage of steam through a pipea is controlled. The wheel C is provided with a transversely-sliding bolt 0 which may be forced into a groove 0 formed in a disk 0 affixed to the shaft 0.

a is an electro-magnet having a bar of soft iron e combined with it. This bar has a push-piece c0 fastened to it and is retracted by a spring (R The coils of the magnet are in a circuit, as already explained, and the magnet may be energized through the closing of a clock or by means of ahand-piece. lVhen the electro-magnet is energized, this pushpiece will force the bolt 0 into the groove 0' of the disk 0 and after this happens motion will be imparted by the wheel O to said disk and thence to the stem of the valve a.

In all the mechanisms which I have just described parts may be reset by hand after operation.

It will be seen that I provide in a simple manner for stopping a steam-engine or a driving-shaft at any time either automatically or from a distant point.

In every example of the improvement which I have explained there is, it will be seen, a driving device or driver and an electromagnetic stop mechanism for preventing the transmission of power by the driver to some other device.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. In a stop mechanism, the combination, with a motive part, of a tappet mounted on and moving with said motive part, apin or rod movable into the path of said tappet, an electro-magnet for moving the pin or rod, and means substantially such as described IIO scribed between the rod and movable part,

connected therewith, whereby the transmisl sion of power is stopped when the magnet is energized, substantially as specified.

2. The combination, with a steam-engine, of a pipe supplying steam thereto, a valve controlling the supply of steam, a movable part for operating said valve, a tappet carried by the cross-head of the engine, a rod capable of being moved into the path of the tappet, mechanism substantially such as described between the rod and movable part, and an electro-magnet for shifting said rod, substantially as specified.

The combination, With a steam engine, of a pipe supplying steam thereto, a valve controlling the supply of steam, a movable part for operating said valve, a tappet carried by the cross-head of the engine, a rod capable of being moved into the path of the tappet, mechanism substantially such as de an electro-magnet for shifting said rod, and

means for causing the operation of said electro-magnet, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ERNEST BOENING.

Witnesses:

THOMAS H. KELLY, J ERE. S. CLARK. 

